Submission #952161

#	Time	Username	Problem	Language	Result	Execution time	Memory
952161		SmuggingSpun	Just Long Neckties (JOI20_ho_t1)	C++14	100 / 100	170 ms	18768 KiB

ho_t1

#include<bits/stdc++.h>
#define taskname "justlongneckties"
using namespace std;
const int lim = 2e5 + 5;
const int INF = 1e9;
template<class T>void maximize(T& a, T b){
	if(a < b){
		a = b;
	}
}
int n, a[lim], b[lim], p[lim], ans[lim];
int main(){
	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	if(fopen(taskname".inp", "r")){
		freopen(taskname".inp", "r", stdin);
	}
	int n;
	cin >> n;
	for(int i = 0; i <= n; ){
		cin >> a[++i];
	}
	for(int i = 1; i <= n; i++){
		cin >> b[i];
	}
	sort(b + 1, b + n + 1);
	iota(p + 1, p + n + 2, 1);
	sort(p + 1, p + n + 2, [&] (int i, int j) -> bool{
		return a[i] < a[j];
	});
	multiset<int>right;
	int left = -INF;
	for(int i = 1; i <= n; i++){
		right.insert(a[p[i + 1]] - b[i]);
	}
	ans[p[1]] = *right.rbegin();
	for(int i = 2; i <= n + 1; i++){
		right.erase(right.find(a[p[i]] - b[i - 1]));
		maximize(left, a[p[i - 1]] - b[i - 1]);
		ans[p[i]] = max(right.empty() ? 0 : *right.rbegin(), left);
	}
	for(int i = 0; i <= n; ){
		cout << max(0, ans[++i]) << " ";
	}
}

Compilation message (stderr)

ho_t1.cpp: In function 'int main()':
ho_t1.cpp:15:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |   freopen(taskname".inp", "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 1 / 1
• Subtask 2: 8 / 8
• Subtask 3: 91 / 91